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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IR3088AM датащи(PDF) 5 Page - International Rectifier |
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IR3088AM датащи(HTML) 5 Page - International Rectifier |
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5 / 34 page  IR3088A PARAMETER TEST CONDITION MIN TYP MAX UNIT General VCC Supply Current 10 14 mA VCCL Supply Current 2.5 5 mA VCCH Supply Current 6V ≤ VCCH ≤ 14V 5.5 8 mA 14V ≤ VCCH ≤ 25V 6.5 10 mA BIASIN Bias Current -5 -2.5 2 µA DACIN Bias Current -2 -0.5 1 µA Note 1: Guaranteed by design, but not tested in production PIN DESCRIPTION PIN# PIN SYMBOL PIN DESCRIPTION 1 RMPIN+ Non-inverting input to Ramp Comparator 2 RMPIN- Inverting input to Ramp Comparator 3 HOTSET Inverting input to VRHOT comparator. Connect resistor divider from VBIAS to LGND to program VRHOT threshold. Diode or thermistor may be substituted for lower resistor for enhanced/remote temperature sensing. 4 VRHOT Open Collector output of the VRHOT comparator which drives low if IC junction temperature exceeds the user programmable limit. Connect external pull-up. 5 ISHARE Output of the Current Sense Amplifier and input to the Share Adjust Error Amplifier. Voltage on this pin is equal to V(DACIN) + 34 * [V(CSIN+) – V(CSIN-)]. Connecting ISHARE pins together creates a Share Bus enabling current sharing between Phase ICs. The Share bus is also used by the Control IC for voltage positioning and Over- Current protection. 6 SCOMP Compensation for the Current Share control loop. Connect a capacitor to ground to set the control loop’s bandwidth. 7 EAIN PWM comparator input from the error amplifier output of Control IC. Both Gate Driver outputs drive low if the voltage on this pin is less than 91% of V(DACIN). 8 PWMRMP PWM comparator ramp input. Connect a resistor from this pin to the converter input voltage and a capacitor to LGND to program the PWM ramp. 9 LGND Signal ground and IC substrate connection 10 VCC Power for internal circuitry 11 VCCL Power for Low-Side Gate Driver 12 GATEL Low-Side Gate Driver Output and input to GATEH non-overlap comparator 13 PGND Return for Gate Drivers 14 GATEH High-Side Gate Driver Output and input to GATEL non-overlap comparator 15 VCCH Power for High-Side Gate Driver 16 CSIN+ Non-inverting input to the Current Sense Amplifier 17 CSIN- Inverting input to the Current Sense 18 PHSFLT Open Collector output of the Phase Fault comparator. Drives low if Phase current is unable to match the level of the SHARE bus due to an external fault. Connect external pull-up. 19 DACIN Reference voltage input from the Control IC. Current sensing and PWM operation referenced to this pin. 20 BIASIN System reference voltage for internal circuitry Page 5 of 34 9/30/04 |
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